Sorry for off topic, but 72 el dorado sounds really cool. I would really like to get a late 60s or early 70s el dorado and fix it up. Do you even have to worry about vibration from subwoofers in a car like that? How is the electrical system? Is it easy to work in with respect to Din size ?

Availiablity on sleds seems pretty slim, except for the ones that a user might have to sell to you, or the new ones that are going to be made.

Besides who drives and el dorado for the economy, those are bad ass pimp cars.